package com.mmall.service.impl;

import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.google.common.collect.Lists;
import com.mmall.common.Const;
import com.mmall.common.ResponseCode;
import com.mmall.common.ServerResponse;
import com.mmall.dao.CategoryMapper;
import com.mmall.dao.ProductMapper;
import com.mmall.pojo.Category;
import com.mmall.pojo.Product;
import com.mmall.service.ICategoryService;
import com.mmall.service.IProductService;
import com.mmall.util.DateTimeUtil;
import com.mmall.util.PropertiesUtil;
import com.mmall.vo.ProductDetailVo;
import com.mmall.vo.ProductListVo;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by Jivan on 2020/1/27.
 */
@Service("iProductService")
public class ProductServiceImpl implements IProductService {

    @Autowired
    private ProductMapper productMapper;

    @Autowired
    private CategoryMapper categoryMapper;

    @Autowired
    private ICategoryService iCategoryService;

    public ServerResponse saveOrUpdateProduct(Product product) {
        if(product != null) {
            if(StringUtils.isNotBlank(product.getSubImages())) {
                String[] subImageArray = product.getSubImages().split(",");
                if(subImageArray.length > 0) {
                    product.setMainImage(subImageArray[0]);
                }
            }

            if(product.getId() != null) {
                int rowCount = productMapper.updateByPrimaryKey(product);
                if(rowCount > 0) {
                    return ServerResponse.creatBySuccessMessage("更新产品成功");
                }
                return ServerResponse.creatByErrorMessage("更新产品失败");
            }
            else {
                int rowCount = productMapper.insert(product);
                if(rowCount > 0) {
                    return ServerResponse.creatBySuccessMessage("新增产品成功");
                }
                return ServerResponse.creatByErrorMessage("新增产品失败");
            }
        }
        return ServerResponse.creatByErrorMessage("新增或更新产品参数不正确");
    }

    public ServerResponse<String> setSaleStatus(Integer productId, Integer status) {
        if(productId == null || status == null) {
            return ServerResponse.creatByErrorCodeMessage(ResponseCode.ILLEAGLE_ARGUEMENT.getCode(), ResponseCode.ILLEAGLE_ARGUEMENT.getDesc());
        }
        Product product = new Product();
        product.setId(productId);
        product.setStatus(status);
        int rowCount = productMapper.updateByPrimaryKeySelective(product);
        if(rowCount > 0) {
            return ServerResponse.creatBySuccessMessage("修改产品销售状态成功");
        }
        return ServerResponse.creatByErrorMessage("修改产品销售状态失败");
    }

    public ServerResponse<ProductDetailVo> manageProductDetail(Integer productId) {
        if(productId == null) {
            return ServerResponse.creatByErrorCodeMessage(ResponseCode.ILLEAGLE_ARGUEMENT.getCode(), ResponseCode.ILLEAGLE_ARGUEMENT.getDesc());
        }
        Product product = productMapper.selectByPrimaryKey(productId);
        if(product == null) {
            ServerResponse.creatByErrorMessage("产片已下架或者删除");
        }
        //VO对象--value object
        ProductDetailVo productDetailVo = assembleProductDetailVo(product);
        return ServerResponse.creatBySuccess(productDetailVo);
    }

    private ProductDetailVo assembleProductDetailVo(Product product) {
        ProductDetailVo productDetailVo = new ProductDetailVo();
        productDetailVo.setId(product.getId());
        productDetailVo.setSubtitle(product.getSubtitle());
        productDetailVo.setPrice(product.getPrice());
        productDetailVo.setMainImage(product.getMainImage());
        productDetailVo.setSubImages(product.getSubImages());
        productDetailVo.setCategoryId(product.getCategoryId());
        productDetailVo.setDetail(product.getDetail());
        productDetailVo.setName(product.getName());
        productDetailVo.setStatus(product.getStatus());
        productDetailVo.setStock(product.getStock());

        //imageHost
        productDetailVo.setImageHosts(PropertiesUtil.getProperty("ftp.server.http.prefix", "ftp://121.41.108.108/"));

        //parentCategoryId
        Category category = categoryMapper.selectByPrimaryKey(product.getCategoryId());
        if(category == null) {
            productDetailVo.setParentCategoryId(0);//默认根节点
        }
        else {
            productDetailVo.setParentCategoryId(category.getParentId());
        }

        //createTime
        productDetailVo.setCreateTime(DateTimeUtil.dateToStr(product.getCreateTime()));

        //updateTime
        productDetailVo.setCreateTime(DateTimeUtil.dateToStr(product.getUpdateTime()));
        return productDetailVo;
    }

    public ServerResponse<PageInfo> getProductList(int pageNum, int pageSize) {
        //startPage--start
        //填充自己的sql查询逻辑
        //pageHepler--收尾
        PageHelper.startPage(pageNum, pageSize);
        List<Product> productList = productMapper.selectList();
        List<ProductListVo> productListVoList = Lists.newArrayList();
        for(Product productItem : productList) {
            ProductListVo productListVo = assembleProductListVo(productItem);
            productListVoList.add(productListVo);
        }
        PageInfo pageResult = new PageInfo(productList);
        pageResult.setList(productListVoList);
        return ServerResponse.creatBySuccess(pageResult);
    }

    private ProductListVo assembleProductListVo(Product product) {
        ProductListVo productListVo = new ProductListVo();
        productListVo.setId(product.getId());
        productListVo.setSubtitle(product.getSubtitle());
        productListVo.setPrice(product.getPrice());
        productListVo.setMainImage(product.getMainImage());
        productListVo.setCategoryId(product.getCategoryId());
        productListVo.setName(product.getName());
        productListVo.setStatus(product.getStatus());
        //imageHost
        productListVo.setImageHosts(PropertiesUtil.getProperty("ftp.server.http.prefix", "ftp://121.41.108.108/"));
        return productListVo;
    }

    public ServerResponse<PageInfo> searchProduct(String productName, Integer productId, int pageNum, int pageSize) {
        PageHelper.startPage(pageNum, pageSize);
        if(StringUtils.isNotBlank(productName)) {
            productName = new StringBuilder().append("%").append(productName).append("%").toString();
        }
        List<Product> productList = productMapper.selectByNameAndProductId(productName, productId);
        List<ProductListVo> productListVoList = Lists.newArrayList();
        for(Product productItem : productList) {
            ProductListVo productListVo = assembleProductListVo(productItem);
            productListVoList.add(productListVo);
        }
        PageInfo pageResult = new PageInfo(productList);
        pageResult.setList(productListVoList);
        return ServerResponse.creatBySuccess(pageResult);
    }

    public ServerResponse<ProductDetailVo> getProductDetail(Integer productId) {
        if(productId == null) {
            return ServerResponse.creatByErrorCodeMessage(ResponseCode.ILLEAGLE_ARGUEMENT.getCode(), ResponseCode.ILLEAGLE_ARGUEMENT.getDesc());
        }
        Product product = productMapper.selectByPrimaryKey(productId);
        if(product == null) {
            ServerResponse.creatByErrorMessage("产品已下架或者删除");
        }
        if(product.getStatus() != Const.ProductStatusEnum.ON_SALE.getCode()) {
            return ServerResponse.creatByErrorMessage("产品已下架或者删除");
        }
        ProductDetailVo productDetailVo = assembleProductDetailVo(product);
        return ServerResponse.creatBySuccess(productDetailVo);
    }

    public ServerResponse<PageInfo> getProductByKeyWordCategory(String keyword, Integer categoryId, int pageNum, int pageSize, String orderBy) {
        if(StringUtils.isBlank(keyword) && categoryId == null) {
           return ServerResponse.creatByErrorCodeMessage(ResponseCode.ILLEAGLE_ARGUEMENT.getCode(), ResponseCode.ILLEAGLE_ARGUEMENT.getDesc());
        }
        List<Integer> categoryList = new ArrayList<>();
        if(categoryId != null) {
           Category category = categoryMapper.selectByPrimaryKey(categoryId);
           if(category == null && StringUtils.isBlank(keyword)) {
               //没有该分类，并且还没有关键字，这时候返回一个空的结果集，不报错
               PageHelper.startPage(pageNum, pageSize);
               List<ProductListVo> productListVoList = Lists.newArrayList();
               PageInfo pageInfo = new PageInfo(productListVoList);
               return ServerResponse.creatBySuccess(pageInfo);
           }
           categoryList = iCategoryService.selectCategoryAndChildrenById(category.getId()).getData();
        }
        if(StringUtils.isNotBlank(keyword)) {
           keyword = new StringBuilder().append("%").append(keyword).append("%").toString();
        }
        PageHelper.startPage(pageNum, pageSize);
        //排序处理
        if(StringUtils.isNotBlank(orderBy)) {
            if(Const.ProductListOrderBy.PRICE_ASC_DESC.contains(orderBy)) {
                String[] orderByArray = orderBy.split("_");
                PageHelper.orderBy(orderByArray[0] + " " + orderByArray[1]);
            }
        }
        List<Product> productList = productMapper.selectByNameAndCategoryIds(StringUtils.isBlank(keyword)?null:keyword, categoryList.size() == 0?null:categoryList);
        List<ProductListVo> productListVoList = Lists.newArrayList();
        for(Product product : productList) {
            ProductListVo productListVo = assembleProductListVo(product);
            productListVoList.add(productListVo);
        }
        PageInfo pageInfo = new PageInfo(productList);
        pageInfo.setList(productListVoList);
        return ServerResponse.creatBySuccess(pageInfo);
    }
}
